Stable oxygen and carbon isotopic composition of foraminifera and sea water from the Arctic Ocean
O18/O16 data on a depth profile of water samples from the Arctic Ocean reveal that near surface water is depleted in O18 by about 4 per mil, but water at depths greater than 350 meters reaches near normal open ocean water composition. The O18 profile very closely follows the salinity profile, with d...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.730373 2023-05-15T14:24:49+02:00 Stable oxygen and carbon isotopic composition of foraminifera and sea water from the Arctic Ocean van Donk, Jan Mathieu, Guy MEDIAN LATITUDE: 75.726650 * MEDIAN LONGITUDE: -158.576650 * SOUTH-BOUND LATITUDE: 75.683300 * WEST-BOUND LONGITUDE: -159.670000 * NORTH-BOUND LATITUDE: 75.770000 * EAST-BOUND LONGITUDE: -157.483300 * DATE/TIME START: 1966-01-01T00:00:00 * DATE/TIME END: 1966-01-01T00:00:00 1969-01-11 application/zip, 2 datasets https://doi.pangaea.de/10.1594/PANGAEA.730373 https://doi.org/10.1594/PANGAEA.730373 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.730373 https://doi.org/10.1594/PANGAEA.730373 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: van Donk, Jan; Mathieu, Guy (1969): Oxygen isotope composition of foraminifera and water samples from the Arctic Ocean. Journal of Geophysical Research: Oceans, 74(13), 3396-3407, https://doi.org/10.1029/JC074i013p03396 OCE Oceanography T3-66 VanDonk1969 Dataset 1969 ftpangaea https://doi.org/10.1594/PANGAEA.730373 https://doi.org/10.1029/JC074i013p03396 2023-01-20T07:31:36Z O18/O16 data on a depth profile of water samples from the Arctic Ocean reveal that near surface water is depleted in O18 by about 4 per mil, but water at depths greater than 350 meters reaches near normal open ocean water composition. The O18 profile very closely follows the salinity profile, with deltaO18 changing by about 0.8 per mil per 1 per mil salinity change. The results of deltaO18 measurements on the pelagic species Globigerina pachyderma from a composite core show that the deltaO18 value has not changed since the latter part of the last glacial period. This constancy we take to indicate that the temperature and the deltaO18 value of the water in which these foraminifera grew have not changed significantly since that time. Such a conclusion seems to imply that the present ice coverage in the Arctic Ocean has remained unchanged during the last 25,000 years. However, the deltaO18 value of benthonic foraminifera shows a shift of 1.2 per mil between the end of the last glacial period and the present warm period. This shift is consistent with the idea that the deep water mass of the Arctic Ocean is formed outside the Arctic basin. The information on the deltaO18 value of the benthonic foraminifera from the top of the core was used in conjunction with the data on deltaO18 and temperature of the bottom water to establish the constant in the empirical equation relating deltaO18 values to temperature for the preparation procedure used in our laboratory. Based on this calibration, the data confirm A. W. H. Bé's contention (personal communication, 1960) that G. pachyderma incorporates about one-half of its CaCO3 below 300 meters. Dataset Arctic Arctic Basin Arctic Arctic Ocean Foraminifera* PANGAEA - Data Publisher for Earth & Environmental Science Arctic Arctic Ocean ENVELOPE(-159.670000,-157.483300,75.770000,75.683300) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
OCE Oceanography T3-66 VanDonk1969 |
spellingShingle |
OCE Oceanography T3-66 VanDonk1969 van Donk, Jan Mathieu, Guy Stable oxygen and carbon isotopic composition of foraminifera and sea water from the Arctic Ocean |
topic_facet |
OCE Oceanography T3-66 VanDonk1969 |
description |
O18/O16 data on a depth profile of water samples from the Arctic Ocean reveal that near surface water is depleted in O18 by about 4 per mil, but water at depths greater than 350 meters reaches near normal open ocean water composition. The O18 profile very closely follows the salinity profile, with deltaO18 changing by about 0.8 per mil per 1 per mil salinity change. The results of deltaO18 measurements on the pelagic species Globigerina pachyderma from a composite core show that the deltaO18 value has not changed since the latter part of the last glacial period. This constancy we take to indicate that the temperature and the deltaO18 value of the water in which these foraminifera grew have not changed significantly since that time. Such a conclusion seems to imply that the present ice coverage in the Arctic Ocean has remained unchanged during the last 25,000 years. However, the deltaO18 value of benthonic foraminifera shows a shift of 1.2 per mil between the end of the last glacial period and the present warm period. This shift is consistent with the idea that the deep water mass of the Arctic Ocean is formed outside the Arctic basin. The information on the deltaO18 value of the benthonic foraminifera from the top of the core was used in conjunction with the data on deltaO18 and temperature of the bottom water to establish the constant in the empirical equation relating deltaO18 values to temperature for the preparation procedure used in our laboratory. Based on this calibration, the data confirm A. W. H. Bé's contention (personal communication, 1960) that G. pachyderma incorporates about one-half of its CaCO3 below 300 meters. |
format |
Dataset |
author |
van Donk, Jan Mathieu, Guy |
author_facet |
van Donk, Jan Mathieu, Guy |
author_sort |
van Donk, Jan |
title |
Stable oxygen and carbon isotopic composition of foraminifera and sea water from the Arctic Ocean |
title_short |
Stable oxygen and carbon isotopic composition of foraminifera and sea water from the Arctic Ocean |
title_full |
Stable oxygen and carbon isotopic composition of foraminifera and sea water from the Arctic Ocean |
title_fullStr |
Stable oxygen and carbon isotopic composition of foraminifera and sea water from the Arctic Ocean |
title_full_unstemmed |
Stable oxygen and carbon isotopic composition of foraminifera and sea water from the Arctic Ocean |
title_sort |
stable oxygen and carbon isotopic composition of foraminifera and sea water from the arctic ocean |
publisher |
PANGAEA |
publishDate |
1969 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.730373 https://doi.org/10.1594/PANGAEA.730373 |
op_coverage |
MEDIAN LATITUDE: 75.726650 * MEDIAN LONGITUDE: -158.576650 * SOUTH-BOUND LATITUDE: 75.683300 * WEST-BOUND LONGITUDE: -159.670000 * NORTH-BOUND LATITUDE: 75.770000 * EAST-BOUND LONGITUDE: -157.483300 * DATE/TIME START: 1966-01-01T00:00:00 * DATE/TIME END: 1966-01-01T00:00:00 |
long_lat |
ENVELOPE(-159.670000,-157.483300,75.770000,75.683300) |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Basin Arctic Arctic Ocean Foraminifera* |
genre_facet |
Arctic Arctic Basin Arctic Arctic Ocean Foraminifera* |
op_source |
Supplement to: van Donk, Jan; Mathieu, Guy (1969): Oxygen isotope composition of foraminifera and water samples from the Arctic Ocean. Journal of Geophysical Research: Oceans, 74(13), 3396-3407, https://doi.org/10.1029/JC074i013p03396 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.730373 https://doi.org/10.1594/PANGAEA.730373 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.730373 https://doi.org/10.1029/JC074i013p03396 |
_version_ |
1766297274506280960 |